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  • 1
    Digitale Medien
    Digitale Medien
    Study of qualitative analysis by liquid chromatography using porous polymer gel (1979)
    Springer
    Chromatographia 12 (1979), S. 77-82 
    Details
    ISSN: 1612-1112
    Schlagwort(e): Liquid chromatography ; Qualitative analysis ; Hydrophobicity ; Reversed phase mode chromatography ; Calculation of solvent concentration
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary The possibility of qualitative analysis by liquid chromatography is discussed in systems of polystyrene gel or chemically bonded octadecyl packing with alcohols as standard compounds. Rekker's hydrophobic fragmental constants are used for identification purposes. Capacity ratios for alcohols can be calculated from the hydrophobicities in spite of changes in solvent mixture ratios if the capacity ratio for an internal standard compound is measured.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02302930
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Chromatographic behaviour of acids on macro-porous-polystyrene gels (1983)
    Springer
    Chromatographia 17 (1983), S. 633-639 
    Details
    ISSN: 1612-1112
    Schlagwort(e): Macro porous polystyrene gel and the ion-exchange resins ; Aromatic acids ; Hydrophobicity ; Dissociation constant ; lon-pair
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Summary The retention behaviour of aromatic acids was examined in a reversed-phase mode liquid chromatography. Macro porous styrene-divinylbenzene copolymers were selected on the basis of their chemical stability throughout the entire pH range. The effect of addition of a hydrophobic ion in the eluent and that of an ion-exchange group on the packing were discussed in relation with the hydrophobicity and the dissociation constant of solutes. The maximum capacity ratios of the acids on apolystyrene gel are linearly related with the hydrophobicity. The prediction of the retention time of aromatic acids could be possible by combination of their hydrophobicity and their dissociation constants.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02261948
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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